title: Nitrate-removal activity of a biofilm attached to a perlite carrier under continuous aeration conditions.
abstract: The nitrate-removal activity of a biofilm attached to a perlite carrier from an aerobic bioreactor used for treating dairy farm wastewater was examined by batch experiments under continuous aeration conditions. Despite aeration, the biofilm removed nitrate at a rate of 114.4 mg-N/kg-perlite/h from wastewater containing cow milk and manure. In a clone library analysis of the biofilm, bacteria showing high similarity to the denitrifying bacteria Thauera spp. were detected.
authors.affiliation: Pollution Control Research Team, National Institute of Livestock and Grassland Science (NILGS), Ibaraki, Japan. yamatktk@affrc.go.jp
authors.forename: Takahiro
authors.initials: T
authors.lastname: Yamashita
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Yokoyama
authors.forename: Sumiyo
authors.initials: S
authors.lastname: Kanafusa
authors.forename: Akifumi
authors.initials: A
authors.lastname: Ogino
authors.forename: Mitsuyoshi
authors.initials: M
authors.lastname: Ishida
authors.forename: Takashi
authors.initials: T
authors.lastname: Osada
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Tanaka
mesh_terms: D000327:Adsorption; D000332:Aerobiosis; D000537:Aluminum Oxide / Q000737:chemistry; D000818:Animals; D015373:Bacterial Typing Techniques; D001673:Biodegradation, Environmental; D018441:Biofilms / Q000254:growth & development*; D057919:Biological Oxygen Demand Analysis; D019149:Bioreactors; D006863:Hydrogen-Ion Concentration; D008372:Manure / Q000382:microbiology; D008892:Milk / Q000378:metabolism; D009566:Nitrates / Q000378:metabolism*; D009584:Nitrogen / Q000378:metabolism; D009589:Nitrogen Oxides / Q000378:metabolism; D010100:Oxygen / Q000378:metabolism; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000032:analysis / Q000145:classification; D012822:Silicon Dioxide / Q000737:chemistry; D020628:Thauera / Q000254:growth & development*; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D008372:Manure; D009566:Nitrates; D009589:Nitrogen Oxides; D012336:RNA, Ribosomal, 16S; C003076:Perlite; D012822:Silicon Dioxide; D000537:Aluminum Oxide; D009584:Nitrogen; D010100:Oxygen